:root{
  --bg:#0a1626;
  --panel:#101f37;
  --panel2:#13243f;
  --line:rgba(120,160,210,.16);
  --ink:#eaf1fb;
  --muted:#9fb4d2;
  --accent:#6fb0ff;
  --accent2:#3f7fd6;
  --gold:#cda86b;
  --side:248px;
  --serif:Georgia,'Times New Roman',serif;
  --sans:Arial,Helvetica,sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--bg);color:var(--ink);font-family:var(--serif);line-height:1.6;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
a{color:var(--accent)}
#bg{position:fixed;inset:0;z-index:0;display:block}

/* ── sidebar ── */
aside{
  position:fixed;top:0;left:0;bottom:0;width:var(--side);z-index:3;
  display:flex;flex-direction:column;padding:28px 26px;overflow:hidden;
  border-right:1px solid var(--line);
  background:rgba(8,16,28,.84);backdrop-filter:blur(7px);
}
.side-bg{position:absolute;inset:0;z-index:0;opacity:.9;pointer-events:none}
.side-books{position:absolute;inset:0;z-index:0;pointer-events:none;overflow:hidden}
.bk{position:absolute;width:66px;height:90px;border-radius:3px;opacity:.5;
  box-shadow:0 8px 22px rgba(0,0,0,.5);font-family:var(--sans);font-size:8px;
  color:rgba(255,255,255,.95);padding:8px 6px;line-height:1.2;letter-spacing:.2px;
  border:1px solid rgba(150,185,230,.25);
  animation:drift 26s linear infinite}
@keyframes drift{0%{transform:translateY(110vh) rotate(-6deg)}100%{transform:translateY(-120px) rotate(6deg)}}
aside>*{position:relative;z-index:1}
.mono{display:flex;align-items:center;gap:13px;text-decoration:none;color:var(--ink);margin-bottom:40px}
.mono .badge{width:42px;height:42px;border:1px solid var(--accent);border-radius:50%;
  display:grid;place-items:center;font-weight:bold;color:var(--accent);font-size:21px;flex:none;
  background:rgba(10,22,38,.6)}
.mono b{font-weight:600;letter-spacing:.3px;font-size:15px;line-height:1.25}
nav{display:flex;flex-direction:column;gap:3px;background:rgba(7,14,25,.55);
  border:1px solid var(--line);border-radius:12px;padding:7px}
nav a{color:#d3e0f4;text-decoration:none;font-size:15px;font-family:var(--sans);font-weight:600;
  letter-spacing:.3px;padding:10px 13px;border-radius:8px;border-left:2px solid transparent;transition:.18s}
nav a:hover{color:#fff;background:rgba(111,176,255,.14)}
nav a.active{color:#fff;border-left-color:var(--accent);background:rgba(111,176,255,.2)}
.search-box{margin:18px 0 0}
.search-box input{width:100%;border:1px solid var(--line);background:rgba(255,255,255,.05);
  color:var(--ink);border-radius:20px;padding:10px 15px;font-size:13px;font-family:var(--sans);outline:none}
.search-box input:focus{border-color:var(--accent2)}
.search-box input::placeholder{color:var(--muted)}
.side-foot{margin-top:auto;display:flex;flex-direction:column;gap:14px;padding-top:24px}
.lang{font-family:var(--sans);font-size:13px;color:var(--muted)}
.lang a{color:var(--muted);text-decoration:none}.lang a:hover{color:var(--ink)}.lang b{color:var(--ink)}

/* ── main ── */
main{position:relative;z-index:1;margin-left:var(--side)}
.wrap{max-width:980px;margin:0 auto;padding:0 40px}
.page-title{font-size:32px;font-weight:600;margin:70px 0 6px;letter-spacing:.2px}
.lead{color:var(--muted);font-size:17px;max-width:680px;margin:0 0 38px}
section.block{margin:0 0 46px}
h2.sec{font-size:13px;font-family:var(--sans);letter-spacing:1.4px;text-transform:uppercase;
  color:var(--accent);margin:0 0 18px;font-weight:700}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:26px 28px}

/* hero (home) */
.hero{display:grid;grid-template-columns:200px 1fr;gap:40px;align-items:center;padding:84px 0 40px}
.portrait{width:200px;height:248px;border-radius:6px;border:1px solid var(--line);
  background:linear-gradient(160deg,#16294a,#0c1830);display:grid;place-items:center;overflow:hidden}
.portrait .ph{font-size:84px;color:rgba(111,176,255,.18);font-weight:bold}
.portrait img{width:100%;height:100%;object-fit:cover;display:block}
.hero h1{margin:0 0 14px;font-size:38px;line-height:1.15;font-weight:600;letter-spacing:.2px}
.role{margin:0;color:var(--muted);font-size:17px;max-width:560px}
.role b{color:var(--ink);font-weight:600}

/* dashboards */
.dash{display:grid;grid-template-columns:repeat(6,1fr);gap:14px;padding:14px 0 70px}
.card{grid-column:span 2;background:var(--panel);border:1px solid var(--line);border-radius:10px;
  padding:22px 18px;text-decoration:none;color:inherit;display:flex;flex-direction:column;
  align-items:center;text-align:center;transition:transform .18s,border-color .18s,background .18s}
.card:hover{transform:translateY(-3px);border-color:var(--accent2);background:var(--panel2)}
.card .lab{font-family:var(--sans);font-size:12px;letter-spacing:.6px;text-transform:uppercase;color:var(--muted)}
.card .num{font-size:44px;font-weight:600;color:var(--ink);margin:8px 0 4px;line-height:1}
.card .num small{font-size:23px;color:var(--accent)}
.card .cap{font-family:var(--sans);font-size:12.5px;color:var(--muted)}

/* timeline */
.tl{list-style:none;margin:0;padding:0}
.tl li{display:grid;grid-template-columns:64px 1fr;gap:18px;padding:12px 0;border-bottom:1px solid var(--line)}
.tl li:last-child{border-bottom:none}
.tl .yr{font-family:var(--sans);font-weight:700;color:var(--accent);font-size:15px}
.tl .ev b{color:var(--ink)}.tl .ev{color:var(--muted)}

/* fact grid */
.facts{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.fact{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:16px 18px}
.fact .k{font-family:var(--sans);font-size:12px;letter-spacing:.5px;text-transform:uppercase;color:var(--muted)}
.fact .v{font-size:18px;margin-top:4px}

/* directions / projects */
.cards2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.icard{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:22px 24px;transition:.18s}
.icard:hover{border-color:var(--accent2);background:var(--panel2)}
.icard h3{margin:0 0 8px;font-size:20px;font-weight:600}
.icard p{margin:0;color:var(--muted);font-size:15px}
.icard .tag{display:inline-block;margin-top:12px;font-family:var(--sans);font-size:11px;letter-spacing:.4px;
  text-transform:uppercase;color:var(--gold);border:1px solid rgba(205,168,107,.3);border-radius:20px;padding:3px 10px}

/* books */
.books{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.book{background:linear-gradient(160deg,#16294a,#0c1830);border:1px solid var(--line);border-radius:8px;
  padding:18px;display:flex;flex-direction:column;min-height:180px;transition:.18s}
.book:hover{transform:translateY(-3px);border-color:var(--accent2)}
.book .y{font-family:var(--sans);font-weight:700;color:var(--accent);font-size:13px}
.book .t{margin:8px 0 0;font-size:15px;line-height:1.35}
.book .a{margin-top:auto;color:var(--muted);font-size:12.5px;font-family:var(--sans);padding-top:10px}

/* publications list */
.pubs{list-style:none;margin:0;padding:0}
.pubs li{padding:14px 0;border-bottom:1px solid var(--line)}
.pubs li:last-child{border-bottom:none}
.pubs .py{font-family:var(--sans);font-weight:700;color:var(--accent);font-size:14px;margin-right:8px}
.pubs .pt{color:var(--ink)}.pubs .pv{color:var(--muted);font-size:14px}
.note{font-family:var(--sans);font-size:13px;color:var(--muted);background:rgba(111,176,255,.05);
  border:1px solid var(--line);border-radius:10px;padding:14px 16px;margin-top:18px}

/* contacts */
.cgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:8px}

footer{position:relative;z-index:1;margin-left:var(--side);border-top:1px solid var(--line);
  padding:26px 40px;color:var(--muted);font-size:13px;font-family:var(--sans);text-align:center}

@media(max-width:860px){
  aside{position:static;width:auto;flex-direction:row;align-items:center;flex-wrap:wrap;gap:12px;padding:14px 20px}
  .side-bg,.side-books{display:none}
  .mono{margin:0 auto 0 0}
  nav{flex-direction:row;flex-wrap:wrap;gap:2px}
  nav a{padding:6px 10px;border-left:none}
  .side-foot{margin:0;flex-direction:row;padding:0;gap:10px}
  .search-box{margin:0;order:3;flex:1 1 160px}
  .search-box input{padding:7px 12px}
  main,footer{margin-left:0}
  .hero{grid-template-columns:1fr;justify-items:center;text-align:center;padding:40px 0 24px}
  .role{margin:0 auto}
  .dash{grid-template-columns:repeat(2,1fr)}.card{grid-column:span 1}
  .facts,.cards2,.cgrid{grid-template-columns:1fr}
  .books{grid-template-columns:repeat(2,1fr)}
}